Cryptomatte from Blender to Fusion Studio 16
Blender


enable Properties editor > Layers Properties > Passes > Cryptomatte Object
export animation as image sequence in Multilayed OpenEXR format (Float Full)


Fusion


go to File > Import > Footage and select your image sequence in your directory (so it is imported as one node)
search Cryptomatte (from screen i see you have it instaled, so i'm not going trhough installtation process)
now you have to specify what object to use as mask, for that select cryptomatte node and place source cursor on desired object in image (Torus in my case) and click Add in properties editor, or you can type name of your blender's object directly into field (see image).






I had some issue with edge, but was solved with additional node (macro/group?) here (you will have to Login first). I was also asking for the same kind of node tree fix on BA Thread, but without help for now.